Topic 1: Electrical charges, static electricity Flashcards

1
Q

What is electricity?

A

A form of energy resulting from the existence of charged particles

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2
Q

What is static electricity?

A

The build-up of electrons on an object, more accurately the unbalanced charged resulting from that

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3
Q

What are the Laws of charges?

A
  • Unlike charged attract
  • Like charges repel
  • Charged objects attract uncharged objects
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4
Q

What is electrical discharge?

A

When the build-up of electrons on an object is attracted to another object and jumps

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5
Q

What is a Van de Graff machine

A

A machine that builds up static electric charge with a belt

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6
Q

What special organ does an electric eel use to produce electrical charge

A

electroplaques

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7
Q

What is electrical current?

A

The flow of charged particles

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8
Q

What are the two conditions for a continuous flow of electricity?

A
  • There is a sufficient energy source
  • There is a complete path for electricity to flow
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9
Q

What are Amperes?

A

The rate of which electrical current flows, called “amp” for short

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10
Q

What are conductors?

A

Materials that allow the passage of electricity

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11
Q

What is a circuit?

A

A path that controls the flow of electricity

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12
Q

What is a load?

A

A device that converts electrical energy to another form of energy

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13
Q

What is voltage?

A

Measure of how much electrical
energy each charged particle carries (AKA potential difference)

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14
Q

What amps can lightning strike at?

A

30,000 A

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15
Q

What does Anodizing mean?

A

The process of coating aluminum with aluminum oxide

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16
Q

What does electrorefining mean?

A

Removing impurities form metals with electricity

17
Q

What is a cathode?

A

Negative electrode, attracts cations

18
Q

What is a anode?

A

Positive electrode attracts anions

19
Q

What is electroplating?

A

Using electricity to coat a metal with a thin plate of another metal

20
Q

Who was Alessandro Volta?

A

He made the first practical battery around 1800

21
Q

Who was Humphrey Davis?

A

Filled a room with 200 cells to make a massive battery

22
Q

What is electrolysis?

A

The decomposition of a substance using electricity

23
Q

What is the difference between wet and dry cells?

A
24
Q
A